Plug adaptor



FIG. 1 is a perspective view of a plug adaptor.

FIG. 2 is a front elevational view of the plug adaptor.

FIG. 3 is a rear elevational view of the plug adaptor.

FIG. 4 is a left side elevational view of the plug adaptor.

FIG. 5 is a right side elevational view of the plug adaptor

FIG. 6 is a top plan view of the plug adaptor.

FIG. 7 is a bottom plan view of the plug adaptor.

The broken lines appearing in the figures are for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a plug adaptor, as shown and described. 